1255143277 has 4 divisors (see below), whose sum is σ = 1266873696. Its totient is φ = 1243412860.

The previous prime is 1255143223. The next prime is 1255143289. The reversal of 1255143277 is 7723415521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1255143277 - 2¹⁵ = 1255110509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255173277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5865049 + ... + 5865262.

It is an arithmetic number, because the mean of its divisors is an integer number (316718424).

Almost surely, 2^1255143277 is an apocalyptic number.

It is an amenable number.

1255143277 is a deficient number, since it is larger than the sum of its proper divisors (11730419).

1255143277 is a wasteful number, since it uses less digits than its factorization.

1255143277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11730418.

The product of its digits is 58800, while the sum is 37.

The square root of 1255143277 is about 35428.0013125211. The cubic root of 1255143277 is about 1078.6927705085.

Adding to 1255143277 its reverse (7723415521), we get a palindrome (8978558798).

The spelling of 1255143277 in words is "one billion, two hundred fifty-five million, one hundred forty-three thousand, two hundred seventy-seven".